If you have kafka version - 0.10.2, then adding only the 'listeners' is not enough and 'advertised.listeners' should also be added to the safety valve values for 'kafka.properties'. This is more of a requirement when we set the ip address as '0.0.0.0'. The advertised.listeners value would have the exact ip/hostname:port value.   This information is clearly mentioned at - http://kafka.apache.org/documentation.html#security_configbroker ... View more

It looks like the instructions I had posted in my earlier post, are too vague!. So I thought of adding some screen shots to make it easier to understand.   1. From Cloudera Manager HOME, select the 'HDFS'. 2. Once inside the HDFS home page, click on 'Instances' menu. 3. Once the instances that make up the HDFS component of the CDH are listed, click on the Role Type 'NameNode'. We do NOT have to select 'NameNode', using the check box (this is what i was doing initially), but just click on the 'NameNode' itself. 4. Once the NameNode instance's page comes up, select the 'Action' menu to find the 'FORMAT' option!. Click on it to perform the format of the 'NameNode'. ... View more

Hi flushin101,   You can find the option to 'Format Name Node', by clicking on the instance on which you intend to format the name node, from the 'screen shot' you had pasted in the previous reply. Once you click on the node/host/instance, we are provided with the 'Actions' menu (displayed next to he host/node name). We can then find the 'Format' option within that drop down menu.    Please ignore if you already knew this. ... View more